A .pac (Proxy Auto Config) file is a file stored on a web server that contains instructions for the browser, to help automate the proxy server setting configuration in a web browser. The .pac proxy configuration file contains JavaScript code, and must contain one function called FindProxyForURL. This function accepts two parameters, a URL, and a Hostname. This function returns either “DIRECT” to tell the client to connect to the web server without using a proxy, or “PROXY” followed by…

If you are writing an iOS application that needs to communication with the Apple APN (Apple Push Notification) servers, or if you are are an end user behind a strict firewall, the information below can be used to correctly configure the firewall rules to allow access.…

Taking a screenshot on an Acer Iconia A500 tablet, running Android 4.0 or later, is easy, once you work out how to do it. Unfortunately its not very easy to work out how to do it without reading it somewhere, or someone telling you how.…